Light emitting device, light emitting display device including same, and method of manufacturing same
AssigneesLG Display Co., Ltd., Postech Research and Business Development Foundation
InventorsKwang Jong Kim, Mi Kyung Park, Sun Kap Kwon, Gi Seong Ryu, Yong Young Noh
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Abstract
Discussed is a light emitting device including a first electrode and a second electrode facing each other, a hole transport layer, a first emission layer, and an electron transport layer sequentially disposed between the first electrode and the second electrode. In the transport layer, a first material of a metal halide and a second material of an n-type inorganic compound are included. The second material is included as a dopant in the first material. The hole transport layer can contain no organic material and can be amorphous.
Claims21
A light emitting device, comprising:
- a first electrode and a second electrode facing each other;
- and
- a hole transport layer, a first emission layer, and an electron transport layer sequentially provided between the first electrode and the second electrode,
- wherein the hole transport layer includes a first material of a metal halide, and a second material of an n-type inorganic compound as a dopant in the first material.
A light emitting device, comprising:
- a first electrode and a second electrode on the first electrode;
- and
- a light emitting stack including a hole transport layer, an emission layer, and an electron transport layer, and provided between the first electrode and the second electrode,
- wherein the hole transport layer includes a first metal halide, and a second metal halide as a dopant in the first metal halide.
A method of manufacturing a light emitting device, the method comprising:
- a first operation of forming a plurality of first electrodes spaced apart from each other on a substrate;
- a second operation of forming a hole injection layer on an entire surface of the substrate;
- a third operation of forming a hole transport layer on the hole injection layer, by co-depositing a first material of a metal halide and a second material of an n-type inorganic compound in a smaller amount than an amount of the first material;
- and
- a fourth operation of sequentially forming an emission layer, an electron transport layer, and a second electrode.
Dependencies are inferred from the claim text.